From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752707AbbIGMjA (ORCPT ); Mon, 7 Sep 2015 08:39:00 -0400 Received: from mx2.suse.de ([195.135.220.15]:45981 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752551AbbIGMi7 (ORCPT ); Mon, 7 Sep 2015 08:38:59 -0400 From: Petr Mladek To: Steven Rostedt Cc: Ingo Molnar , Jiri Kosina , linux-kernel@vger.kernel.org, Petr Mladek Subject: [PATCH v3 0/2] ring_buffer: Make the benchmark slightly more safe Date: Mon, 7 Sep 2015 14:38:36 +0200 Message-Id: <1441629518-32712-1-git-send-email-pmladek@suse.com> X-Mailer: git-send-email 1.8.5.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org These two patches fix potential races in the ring buffer benchmark. The first two versions were reviewed as part of the patchset that tried to convert some kthreads into the kthread worker API, see http://thread.gmane.org/gmane.linux.kernel.api/13224/focus=13821 Changes in v3: + fixed several comments (suggested by Steven) + removed duplicate memory barrier (suggested by Steven) Changes in v2: + keep the extra initialization; fix a race instead + move the setting of the current state (suggested by Steven) Petr Mladek (2): ring_buffer: Do no not complete benchmark reader too early ring_buffer: Fix more races when terminating the producer in the benchmark kernel/trace/ring_buffer_benchmark.c | 77 ++++++++++++++++++++---------------- 1 file changed, 44 insertions(+), 33 deletions(-) -- 1.8.5.6